RAID what?



  • I'm rebuilding an old server with 4 x 146GB SAS drives.

    About 12 months back I read all about why RAID 5 is no longer the preferred RAID of choice due to disks becoming so large and that is all good and fine, there's actually a mathematical equation that illustrates why RAID 5 is no good to use with large capacity drives, but I can't find that info any longer.

    Are 146GB disks too big for RAID5?

    146GB isn't large anymore so I'd like to retain as much useable space as possible.

    What do others suggest?



  • @siringo said in RAID what?:

    I'm rebuilding an old server with 4 x 146GB SAS drives.

    About 12 months back I read all about why RAID 5 is no longer the preferred RAID of choice due to disks becoming so large and that is all good and fine, there's actually a mathematical equation that illustrates why RAID 5 is no good to use with large capacity drives, but I can't find that info any longer.

    Are 146GB disks too big for RAID5?

    146GB isn't large anymore so I'd like to retain as much useable space as possible.

    What do others suggest?

    If it is in production, set it up with RAID10.



  • @dbeato said in RAID what?:

    @siringo said in RAID what?:

    I'm rebuilding an old server with 4 x 146GB SAS drives.

    About 12 months back I read all about why RAID 5 is no longer the preferred RAID of choice due to disks becoming so large and that is all good and fine, there's actually a mathematical equation that illustrates why RAID 5 is no good to use with large capacity drives, but I can't find that info any longer.

    Are 146GB disks too big for RAID5?

    146GB isn't large anymore so I'd like to retain as much useable space as possible.

    What do others suggest?

    If it is in production, set it up with RAID10.

    Yep it'll be in production running 1 x WSUS Hyper-v VM & 1 x Hyper-V VM DC.
    It also has 2 x 300GB SAS which I was just going to RAID 1.



  • @siringo said in RAID what?:

    I'm rebuilding an old server with 4 x 146GB SAS drives.

    About 12 months back I read all about why RAID 5 is no longer the preferred RAID of choice due to disks becoming so large and that is all good and fine, there's actually a mathematical equation that illustrates why RAID 5 is no good to use with large capacity drives, but I can't find that info any longer.

    Are 146GB disks too big for RAID5?

    146GB isn't large anymore so I'd like to retain as much useable space as possible.

    What do others suggest?

    146GB drives are perfectly fine as RAID5 in production. I'm sure they are 10k or 15k, yes?



  • @obsolesce said in RAID what?:

    @siringo said in RAID what?:

    I'm rebuilding an old server with 4 x 146GB SAS drives.

    About 12 months back I read all about why RAID 5 is no longer the preferred RAID of choice due to disks becoming so large and that is all good and fine, there's actually a mathematical equation that illustrates why RAID 5 is no good to use with large capacity drives, but I can't find that info any longer.

    Are 146GB disks too big for RAID5?

    146GB isn't large anymore so I'd like to retain as much useable space as possible.

    What do others suggest?

    146GB drives are perfectly fine as RAID5 in production. I'm sure they are 10k or 15k, yes?

    Yeah 15K. I went with RAID 1+0.


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    @siringo said in RAID what?:

    Are 146GB disks too big for RAID5?

    Those are itty bitty. Like 2004 tiny.